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--- packet:new-packet_radio_3_0 [2025/11/09 14:50] – created m0ahn
+++ packet:new-packet_radio_3_0 [2025/11/12 18:00] (current) – m0ahn
@@ Line 1: / Line 1: @@
-...
+====== New Packet Radio 3.0 ======
+This page covers supporting information for users of New Packet Radio (NPR) 3.0 - the latest revision of the original F4HDK-invented New Packet Radio modem first released in 2019.
+===== NPR 3.0: Quick Start =====
+By default, NPR 3.0 firmware is configured in Client mode, To establish a link, a Client and Master is required. Quick start setup for both is covered below.
+All configuration is via the Ethernet port using **telnet**. Default configuration is **192.168.0.0/24**, the NPR IP is **192.168.0.253** and DHCP range starts at **192.168.0.65**
+==== Initial Setup ====
+  - Connect an antenna or dummy load
+  - Power the device using 13.8V DC
+  - Connect a DHCP enabled PC to the Ethernet port
+  - Open a **terminal** and telnet to **192.168.0.253**
+==== Client Setup ====
+  - At the **ready>** prompt, type **display config**
+  - Note the **modulation** and **frequency** settings, these must match the Master
+==== Master Setup ====
+When in Master mode, DHCP on the NPR Ethernet port is disabled. Follow these steps reconfigure NPR and require a local static IP is setup.
+  - At the **ready>** prompt, type **display config**
+  - Note the **modem_IP**, **netmask** and **IP_begin**
+  - Type commands:
+    * **set is_master yes**
+    * **save**
+    * **reboot**
+  - On the connected PC or network, set a manual IP within the subnet and avoiding DHCP range starting with **IP_begin**, e.g. **192.168.0.20**
+  - Validate connectivity by re-opening the telnet connection to **192.168.0.253**
+==== Establishing and Validating and RF Connection ====
+  - When in RF range, NPR should connect. The CONN light will be Green on the Client and TX and RX lights flashing
+  - On the Server, see who is connected by running **who**
+  - On the Client, see connected information by running **status**
+  - Assuming the PC connected to the Master has an IP of 192.168.0.20 and PC connected to the Client has a DHCP assigned address of 192.168.0.65, both devices should be able to ping
+==== Additional Points to Note ====
+  - <color #ed1c24>Be really careful if changing the IP configuration - set the config, check it, check it again, log it, then save and reboot</color>
+  - Set your NIC MTU to 750 to achieve reliable and consistent performance
+  - You always telnet to the modem_IP, which counter-intuitively does not have to be unique on the network. In the default configuration, you would use 192.168.0.253 on all modems when connecting via telnet
+===== NPR 3.0: Upgrading Firmware =====
+==== Prereqs ====
+Flashing the firmware in NPR 3.0 requires:
+  - A Windows PC
+  - Installation of the {{ :packet:stm32_vcp_driver.zip |}} drivers
+  - A Micro-USB cable
+  - The new firmware (with .nfw extension)
+  - The pynpr.exe program
+==== Upgrade Process ====
+  - Disconnect the power supply
+  - Connect the Micro-USB Cable
+  - Run the upgrade using either:
+    * pynpr fwflash -s COM_PORT path/to/nfw.nfw
+    * pynpr fwflash -s auto path/to/nfw.nfw
+===== Original NPR - Background Material, Detailed Configuration Guides and Protocol Spec =====
+[[https://hackaday.io/project/164092-npr-new-packet-radio|Original NPR Hackaday Page]]
+[[https://hackaday.io/project/164092/files|Original NPR Source Files and Docs - Master]]
+Unable to link to the Master docs using a URL - copied locally for ease of access
+{{ :packet:npr70_introduction_en_v3.6.pdf |}}
+{{ :packet:npr_advanced_guide_v2.16.pdf |}}
+{{ :packet:npr_specification_v2.0.pdf |}}
+===== NPR 3.0: Rear Pinouts =====
+Connector 1
+^  Pinout  ^  Description  ^
+^ RX | RS232 RX, 921600 Baud |
+^ TX | RS232 TX, 921600 Baud |
+^ 12V0 | 12V Out|
+^ 5V0 | 5V Out |
+^ 3V3 | 3.3V Out |
+^ - | Not Used |
+^ GND | Ground |
+^ PE1 | STM32 GPIO |
+^ GND | Ground |
+^ PE0 | STM32 GPIO |
+^ PB7 | STM32 GPIO |
+^ PD7 | STM32 GPIO |
+Connector 2
+^  Pinout  ^  Description  ^
+^ 3V3 | 3.3V Out |
+^ CLK | STM32 GPIO |
+^ DIO | STM32 GPIO |
+^ GND | Ground |
+^ RST | STM32 GPIO |